FROM python:3.11-slim

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    wget \
    && rm -rf /var/lib/apt/lists/*

# Install PyTorch CPU-only.
# The PyTorch whl/cpu index only has x86 wheels; on aarch64 we fall back to
# regular PyPI which publishes native aarch64 wheels for torch 2.x.
RUN pip install --no-cache-dir \
        --extra-index-url https://download.pytorch.org/whl/cpu \
        torch

RUN pip install --no-cache-dir \
    transformers==4.44.2 \
    fastapi==0.115.0 \
    "uvicorn[standard]==0.30.6" \
    pydantic==2.9.2 \
    sentencepiece \
    accelerate

COPY app.py .

EXPOSE 8881

CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8881", "--workers", "1"]